28 Feb
2017
28 Feb
'17
10:36 a.m.
On 2/28/17 1:17 PM, Ethan Dicks via cctalk wrote:
Sounds more
complicated than need be.
AVR can measure small signals using the A/D and then do a bit of looking
for zeo crossing to
detect bit times.
Allison
On Tue, Feb 28, 2017 at 11:21 AM, allison via cctalk
<cctalk at classiccmp.org> wrote:
A sound recorder, how novel. My I phone and
androids already do that.
Before that I use tape recorders.
On 2/28/17 10:55 AM, Jim Brain via cctalk wrote:
It sounds like he is
contemplating a battery-powered tape drive
emulator that plugs on the outside of the machine for users to use
without opening their boxes. It would then be portable to other
machines. Sounds like a great idea. I have a cute idea for a cassette port project
for the Tandy line of
computers (the ones with the cassette port)....
Why not just go inside and grab the signal at it source before any of the
analog? it starts life at TTL waveforms (not 5V). Why are you
trying to get to 5V in the first place?
Digital input to the AVR. -ethan